Issues with Conveyor with Plugin

Hello, we found a bug that only happens when the plugin is active.  Example:  When you have a conveyor connected to a large box and connected to electric furnaces with the conveyor set to all metal fragments and other items that are in the box will start slowly dissappearing.  If I turn off the plugin it stops doing it.  Just want to let you know this can be a problem.

This looks like a conflict with another plugin. Do you have any plugin installed that might mess with stacking?

Changed Status from Pending to No Response